The rear is self leveled via an arm mounted to the diffy and resting on the sway bar. If the diffy moves down in relation to the sway bar, the self level system pumps up the rear end to get it back up in the correct position. Lowering the nose will not change the rear.

The rear is somewhat adjustable - procedure outlined in Bentley's.

There are BMW Sport springs available that will work on either the self levelled or non-self levelled rear. The target height will be about 1/2 inch lower than the stock suspension. If you use them on the self-levelled rear, you have to re-calibrate the self level system to the new target height.

Micah

If you have self-leveling, and you lower the front, will the rear go down, too?